Re: Fuzzy cost comparison to eliminate redundant planning work

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Joe Conway <mail(at)joeconway(dot)com>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: Fuzzy cost comparison to eliminate redundant planning work
Date: 2004-03-29 01:39:46
Message-ID: 20041.1080524386@sss.pgh.pa.us
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Joe Conway <mail(at)joeconway(dot)com> writes:
> Tom Lane wrote:
>>> + * XXX does this percentage need to be user-configurable?

> ...but I think the answer to the above is yes.

I'd want to see some evidence that there's use in twiddling it ...
in my initial test, setting it to 10% instead of 1% didn't seem to
do much.

regards, tom lane

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